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Don't be mislead in dust explosion classifications that a St 1 (weak explosion) is less severe than a St 3 (very strong explosion) in human causalities and property damage as the result of catastrophic dust explosions.
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Combustible Dust Policy InstituteCombustible Dust Policy Institute
Photo: CSB
Don’t Be MisleadDust Explosion Classes (St 1, St 2, St 3)
Imperial Sugar Refinery
Combustible Dust Policy InstituteCombustible Dust Policy Institute
Dust explosionclass
Kst (bar.m/s) Characteristic Material
St 0 0 No explosion Silica
St 1 >0 and <=200 Weak
explosion
Powdered milk,charcoal, sulfur,
sugar & zinc
St 2 >200 and <=300
Strong explosion
Wood Flour
St 3 >300 Very Strong explosion
Aluminum, & Magnesium
Dust Explosion Classes
Combustible Dust Policy InstituteCombustible Dust Policy Institute
A Weak Explosion? St 1
SUGAR DUST EXPLOSION14 Killed, 36 Injured
Imperial Sugar Refinery PORT WENTWORTH, GEORGIA FEBRUARY 7, 2008
Photo: CSB
Combustible Dust Policy InstituteCombustible Dust Policy Institute
Thank You!Thank You!
